public class Example7_5 {
    public static void main(String args[]) {
	Bank bank = new Bank();
	try{ bank.income(200,-100);
       	     bank.income(300,-100);
      	     bank.income(400,-100);
             System.out.printf("银行目前有%d元\n",bank.getMoney());
             bank.income(200,100);
   	     bank.income(99999,-100);
	}
	catch(BankException e) {
	    System.out.println("计算收益的过程出现如下问题:");
	    System.out.println(e.warnMess());
	}
	System.out.printf("银行目前有%d元\n",bank.getMoney());
    }
}
